Weird lock up point- Playoffs

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I've been running into a weird lock up point when emulating- I've used 3 emulators (Gens, dgen and megasis), and all three are freezing when I'm exiting game 1 of a best of 7 series I've tried multiple roms ranging from two vanilla ones (no idea of source anymore), the 2010 one found here, and one I edited in NOSE- the same result every time. Has anyone seen this before and/or have any suggestions? (It does not lock up for me there in Vanilla '94)